Bought five and amazed at how well they work. The Windows 7 driver is perfect, and the unit holds calibration as long as you don't change resolution, in which case you just recalibrate and you are fine.
The z bracket base is rugged and allows wall mount via its base plate.

Great quality in the picture... It took a little bit of adjusting to get the screen at an angle..But its nice.

Bought one to start with and have since bought 2 more. work great in my retail shops.